Hi, even if the discussion is older it is still an everyday problem to solve. We use multiple ESP32s with arduino and need lots of communication. So here is my approach: We want to use eight ESP32s that are build into two robots. The two robots have to talk via bluetooth, as only peertopeer is allow...

I just tried to do use a Bluetooth Joystick with my ESP32, but I get an error bta_gattc_conn_cback() - cif=3 connected=0 conn_id=3 reason=0x003e updating to the newest arduino made the error to disappear, but the return code of the connect-function is false, so even if I do not get an error message ...